Zorloo has announced the launch of the "world's first" fully digital earphones (though we might dispute that) with a built-in DAC and high-powered amplifier – a concept that's already proved a resounding success judging by its Indiegogo campaign.

If the latest TVs seemed to dominate the second day of CES 2015 in Las Vegas, hi-fi and audio took on a more central role on the third – Chord Electronics, Audeze, Bang & Olufsen and Musaic among the companies with news to share.